package com.edu.atams.security;

import cn.hutool.json.JSONUtil;
import com.edu.atams.common.lang.Result;
import com.edu.atams.utils.JwtUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

/**
 * @Author gfj
 * @Date 2021/10/20 16:32
 * @description
 */
@Component
@Slf4j
public class LoginSuccessHandler implements AuthenticationSuccessHandler {

    @Autowired
    JwtUtils jwtUtils;

    @Override
    public void onAuthenticationSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Authentication authentication) throws IOException, ServletException {
        httpServletResponse.setContentType("application/json;charset=UTF-8");
        ServletOutputStream outputStream = httpServletResponse.getOutputStream();
        //生成jwt，并放置到请求头中
        String jwt = jwtUtils.generateToken(((AccountUser)authentication.getPrincipal()).getUsername());
        log.info("生成JWT成功！username---{}，userID---{}，JWT---{}",authentication.getName(),((AccountUser)authentication.getPrincipal()).getUsername(),jwt);
        httpServletResponse.setHeader(jwtUtils.getHeader(), jwt);
        Result result = Result.succ(jwt);
        outputStream.write(JSONUtil.toJsonStr(result).getBytes(StandardCharsets.UTF_8));
        outputStream.flush();
        outputStream.close();
    }




}
